A KGB manual showed how valuable—and how treacherous—Russian émigrés could be. Did KGB veteran Vladimir Putin learn those lessons?
https://www.thedailybeast.com/the-kgb-playbook-for-turning-russians-worldwide-into-agents
https://www.radiosvoboda.org/a/28945900.html
https://www.inopressa.ru/article/29Dec2017/dailybeast/kgb.html
https://ru.krymr.com/a/28944363.html
https://ru.krymr.com/a/28941690.html
https://www.kommersant.ru/doc/3511813
https://www.gazeta.ru/comments/column/desnitsky/11508710.shtml
http://www.ng.ru/politics/2017-12-27/3_7145_prokuratura.html
http://www.kasparov.ru/material.php?id=5A41FA6A6F189